Add region to gcp instance template resource

* Configure the regional worker instance templates with the
region of the cluster. This defaults to the provider's region
which isn't always what you want and if left off causes an error
* Close #1512

CHANGES.md

@@ -4,12 +4,15 @@ Notable changes between versions.
 
 ## Latest
 
+## v1.31.1
+
 * Kubernetes [v1.31.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.31.md#v1311)
 * Update flannel from v0.25.5 to [v0.25.6](https://github.com/flannel-io/flannel/releases/tag/v0.25.6)
 
 ### Google
 
 * Add `controller_disk_type` and `worker_disk_type` variables ([#1513](https://github.com/poseidon/typhoon/pull/1513))
+* Add explicit `region` field to regional worker instance templates ([#1524](https://github.com/poseidon/typhoon/pull/1524))
 
 ## v1.31.0
 

google-cloud/fedora-coreos/kubernetes/workers/workers.tf

@@ -62,6 +62,7 @@ resource "google_compute_region_instance_template" "worker" {
   name_prefix  = "${var.name}-worker-"
   description  = "${var.name} worker instance template"
   machine_type = var.machine_type
+  region       = var.region
 
   metadata = {
     user-data = data.ct_config.worker.rendered

google-cloud/flatcar-linux/kubernetes/workers/workers.tf

@@ -62,6 +62,7 @@ resource "google_compute_region_instance_template" "worker" {
   name_prefix  = "${var.name}-worker-"
   description  = "Worker Instance template"
   machine_type = var.machine_type
+  region       = var.region
 
   metadata = {
     user-data = data.ct_config.worker.rendered